X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~mdw/git/mLib/blobdiff_plain/dd3c57bc8cac59e0d657ee665ce462988d27d714..18c831dcd0ae4d660c70ccac69d27ed2a97851be:/sel/sig.h

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+/* -*-c-*-
+ *
+ * Signal handling
+ *
+ * (c) 1999 Straylight/Edgeware
+ */
+
+/*----- Licensing notice --------------------------------------------------*
+ *
+ * This file is part of the mLib utilities library.
+ *
+ * mLib is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Library General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * mLib is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with mLib; if not, write to the Free
+ * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
+ * MA 02111-1307, USA.
+ */
+
+#ifndef MLIB_SIG_H
+#define MLIB_SIG_H
+
+#ifdef __cplusplus
+  extern "C" {
+#endif
+
+/*----- Header files ------------------------------------------------------*/
+
+#include <signal.h>
+
+#ifndef MLIB_SEL_H
+#  include "sel.h"
+#endif
+
+/*----- Data structures ---------------------------------------------------*/
+
+typedef struct sig {
+  struct sig *next;
+  struct sig *prev;
+  int sig;
+  void (*proc)(int /*n*/, void */*p*/);
+  void *p;
+} sig;
+
+/*----- Functions provided ------------------------------------------------*/
+
+/* --- @sig_add@ --- *
+ *
+ * Arguments:	@sig *s@ = pointer to signal handler block
+ *		@int n@ = number of the signal
+ *		@void (*proc)(int n, void *p)@ = signal handler function
+ *		@void *p@ = argument to pass to handler
+ *
+ * Returns:	---
+ *
+ * Use:		Adds a signal handler.
+ */
+
+extern void sig_add(sig */*s*/, int /*n*/,
+		    void (*/*proc*/)(int /*n*/, void */*p*/), void */*p*/);
+
+/* --- @sig_remove@ --- *
+ *
+ * Arguments:	@sig *s@ = pointer to signal handler block
+ *
+ * Returns:	---
+ *
+ * Use:		Removes the signal handler from the list.
+ */
+
+extern void sig_remove(sig */*s*/);
+
+/* --- @sig_init@ --- *
+ *
+ * Arguments:	@sel_state *s@ = pointer to select state
+ *
+ * Returns:	---
+ *
+ * Use:		Initializes the signal handling system ready for use.
+ */
+
+extern void sig_init(sel_state */*s*/);
+
+/*----- That's all, folks -------------------------------------------------*/
+
+#ifdef __cplusplus
+  }
+#endif
+
+#endif